Boomerang



Patented Oct. 13, 19.31

UNIT STATESvv ,noNvvTANTLI-NGER, or sHEnMAncALIronNIA Y :BooivinR-Aimv YApplication filed April 3, 1928. Serial No. 2766,953.

This invention relates to an improvement in the construction ofboomerangs for use either as Weapons or for the purpose of amusey ment.K 1 An object of the invention is to lessen the cost of manufacture ofthe article, and atthe same time to increase its-efficiency.

The invention relates to a boomerang of a composite character, oneadvantage gained by thus constructingA the article vbeing that the Ytwoarms of the boomerang may be more conveniently secured together at aright angle'to each other. l 'y A further object of the invention is toproduce a boomerang especially well adapted for being thrown by amanually operable appliance.

' Other objects and advantages may hereinafter appear. e Y. y Referringto the accompanying l drawings which illustrate a preferred embodimentof` the invention,

Figure 1 is a sideelevation of a boomerang:

designed, when thrown, to be spun in the direction indicated by thearrow on said view.

Figure 2 is an edge viewof Figure 1 looking from the top.

Figure 3 is an'edge viewthereof looking from left to right of Figure 1.

Figure 4 is a section of one of the arms on line 4-4 of Figure 1. y p

Figure 5 is a section of the other arm on line 5-5'of Figure 1.

Figure 6V is a side elevation of a boomerang designed, when thrown inthesame direction as the boomerang of Figure 1, to be spun in the directionindicated by the arrow Y A in said view. 0 v Q' Figure 7 isl a section,on line 7-7 of Figfofure 6.

Figure 8 is a section of the other arm onY line 8-8 of Figure 6.

Referring in detail to theV drawings,

shown in Figure 1 the Vboomerang consists of a relatively long pointedarm 7 to whichis attached asomewhat 'shorter blunt arm 8.

third of its lengtln The base -portion 11`of 1 l p f I claim: As shownin Figure 2, the'arm 7 is curved to one side at 9 throughout about theouter l said arm is considerably thickened land' is,

joined, inl the illustrated embodiment ofthe invention, at a right angleto the thickened basefportion 12 of the outer arm 8. Said arm 8 has acurved, deflected portion 13 which oc- Y cupies, about the outer half ofitslength.;

'v- The bow in each of the arms ofthe boom- Y erang show-n in Figures 1to 5 is "away-from Y ,Y

the 'flat side `of the armand toward the vside thereof which has lthebevelled faces.'r

a less sloping surface 7 b, and the arm S'has Y a steeply bevelledoutersurface 8a and a less sloping inner surface 8b. The opposite sides Y ofthese arms are flat, yas shown in Figures 4 '6B and 5. lIhese rbevelledsurfaces cause the d boomerang shown in VFigures 2 to 5 to defleet tothe right when thrown. i v The boomerang shown in Figures 6to 8 has anarm 20 which is provided with a steeply bevelled outer surface 20a andwith a less sloping inner surface 20o; and with an arm 21 having asteeply bevelled inner edge 21al and a less sloping outer edge 2lb. Therey verse sides of the boomerang shownin Fig-'75 ure 6 are flat as shownin Figures 7 and 8. The` bevels just described cause the boomerang todeiiect to the left whenthrown. In all the views theboomerang is shownas having an arm one side of Which has bevelled V80l .bevels combine toform a projecting or bulging face.

It is understood that, although I have illustrated in the drawings vthepreferred embodiment of the invention, yet I do not intend tolimit'myself strictly. to ythe precise form illustrated, but may ,changeproportions, Vangles and size of parts without -departing from-thespirit of the invention as A defined by the claims.

1. A boomerang'having any arm which, as seen in cross section has on oneside a yrelatively steep bevel and also a lessslopin'g bevel, ,f saidboomerang 'having a secondy armfwith similar bevels which are reverselyarranged and located on the same side of the boom-erang. Y

2. A boomerang having an arm which, as seen in cross section has on oneside a relatively steep bevel and also a less sloping bevel, said armbeing bowed and said bevels being on the concave side of said bowed arm.

3. A boomerang provided with two arms, which as seen in cross sectionare each provided with bevelled surfaces located on the same side of theimplement, each of said arms being bowed, said bevelled surfaces being`on the concave side of said bowed arms.

4. As a new article of manufacture, a boomerang composed solely of twoarms unitedto form an L shaped structure, each of said arms being`bowed, and said arms as seen indcross section being bulged on theirconcave s1 es.

5. As a new article of mamifaeture7 a boomerang` composed solely of twoarms united to form an l. shaped structure, each of said armsbeingbowed, and .said arms as seen in cross section beingl bulged on thesame side.

In testimony whereof I hereunto aiiX my signature.

DON v. Traummann.

5.5VA Y

